A couple of earthquakes were recorded Wednesday and early Thursday within the Cascadia Subduction Zone which has two fault lines that run parallel with the Oregon Coast. According to the U.S. Geological Survey, a 4.5-magnitude quake struck the outer fault line Wednesday west to northwest of Bandon, OR. Then, early Thursday morning, a 3.1-magnitude quake shook the southern end of the two fault lines west to northwest of Petrolia, CA near Cape Mendocino in Northern California.